THIRUVANATHAPURAM: Agriculture Minister Mullakkara Ratnakaran has requested Union Minister of State for Environment and Forests Jairam Ramesh to revoke the permission given for field trials of genetically-modified (GM) rubber in Kottayam.

'Express' had reported that the Genetic Engineering Appraisal Committee (GEAC), at a meeting held on November 15, had given its approval to the Rubber Researc